Light bulb



FIG. 1 is a perspective view of a light bulb showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom rear view thereof, revealing the pins; and,

FIG. 9 is a perspective view, revealing the pins. 

CLAIM The ornamental design for a light bulb, as shown and described. 